Dump-door-operating mechanism



J. 0. NEIKIRK.

DUMP DOOR OPERATING MECHANISM.

APPLICATION FILED MAYIs, |922.

www@ paIenIedsepI. I2, 1922.

/uu nu U I o I Vol l0 0 Ik I I I u u oon n o n o o D OOOlo o o] I oo n n u non `D ool 0,*

oi\ o foi Q J o o o o 0 nooIzu n o nn u.u up no o como o o Patented sepi. i2, i922.

NETED STATES IPATENT OFFICE.

JOHN O. NIIIIRK, OF LOMBARD, ILLINOIS, ASSIGNOR To RODGER BALLAST OAR co., on CHICAGO, ILLINOIS, A CORPORATION or MISSOURI.4

DUMP-DOOR-OPERATING MCHANISM.

Application ledMay 13,

To all lwhom 'it may concern.'

Be it known that I, JOHN O. NEIKIRK, a citizen of the United States, residing at Lombard, in the county of Du Page and State of Illinois, have invented certain new and useful Improvements in Dump-Door- ()perating Mechanism, of which the following is a specification.

he present invention relates to dump door operating mechanism.

More vparticularly the present invention relates to shaft operating mechanism applicable to dump cars. It is desirable to control said mechanism with some degree of nicety whereby various degrees of opening of the discharge doors may be readily Obtained and whereby when said doors, are opened, the force of the material within the car will not throw the dumping mechanism violently to open position.

Une of the objects of the present invention, therefore, is to provide a shaft operating mechanism which may be readily manipulated by an operator and which permits various degrees of opening of the discharge doors.

A further Object is to provide a construction which is readily applicable to cars as at presentY designed, which offers convenient means for closing the dump doors of a railway dump car, which insures the holding of said dump doors in closed position, and which permits the ready control of said dump doors during the Opening operation.

The present invention utilizes certain of the principles of applicants Patent #1,374,516. granted April 12, 1921, and consists of a novel arrangenvnt of parts whereby the principles of the invention covered in said patent may be eflicicntly utilized.

The invention will be described in connection with a preferred embodiment thereof which accomplishes the objects above recited; Further objects will appear as the description proceeds.

Referring to the drawings- Figure 1 is a fragmentary view in side elevation showing a dump car embodying the principles of the present invention;

Figure 2 is a view on an enlarged scaleof the embodimentl of the present invention illustrated in Figure 1;

Figure 3 is a view in Side elevation. partly in section. of the structure illustrated in 55 Figure 2. the' sectional view being takenv 1922. Serial No. 560,532.

along the plane marked by the line 3--3 of Figure 2; and

Figure 4 represents a detail of the structure shown in Figures 2 and 3, said `detail being removed from adjacent parts whereby the structure of the entire arrangement may be more readily discernible.

The numeral 10 indicates one of the sidesof a railway car, said car having bottom dump doors (not shown) which are included in the bottom of the car and are controlled by the chains 11-11, saidrchains being operated by the rotat-able shaft 12, which rotatable shaft may be secured in suitable bearings mounted upon the side 10 of the car, wereby to' be mounted parallel to the car si e.

Secured at the end of the shaft 12 is the socket member 13, Which provides a plurality of radially extending sockets 14, each of which is adapted to receive the end of an operating bar (not shown) for communicating a turning motion to the shaft 12, whereto move the dump doors to closing position. i

Rigidly mounted upon the side vof the car is the bracket 15, which may be provided with an opening for receiving the shaft 12 and permitting the rotation of said shaft 12 relative to said bracket 15. Rigidly secured to the shaft 12 adjacent to the bracket 15 is the ratchet 16. which includes a central disk having stop members 17-17 on opposite sides thereof, the series of stop members on one side of the disk being staggered With-respect to the series of stop members on the other side. Cooperating with the stop members 1T17 are the jaws 18-18 of the pawl 19, which pawl is pivotally mounted on the bracket 15 along-the axis 20. The outer end of the pawl 19 has the socket member 21 for the reception of an operating handle, whereby the pawl member 19 may be oscillated back and forth in a plane substantially parallel to the car side in such a manner that 100 its jaws` 18?18 may function with the stop 22 has the tooth 24 adapted to abut againstelled whereby the pawl 19 will not interfere with said closing movement. The design of the faces of the stop members 17--17 which present holding engagement with jaws 18-18 or tooth 21 is subject to wide variation.

When the dump doors are in closed position the detent 22 will occupy the position indicated in Figures 2 and 3 of the drawing, wherein the tooth 24 of detent 22 lies in the path of the stop members 17 to hold the shaft 12 against rotation in a directlon to permit opening of the dump doors. One

of the stop members 1T will be in abutting' engagementI with tooth 21. Vhen it is desired to open said dump doors the detent 22 may be moved about the pivot 23 in a counter-clockwise direction, j thereby freeing the tooth 24 from the ratchet wheel 16. At this time one of the jaws 18 will lie in the path of stop members 1T, and said ratchet 16 will still be held against any substantial degree ot' rotation. To permit the ratchet 16 to rotate through one step, the pawl 19 is shifted laterally. so that the jaw 18, which is in abutting relation with said ratchet, moves away from said ratchet. and out of engagement with the associated stop member 1T to permit the shaft to rotate one step, thereby permitting the dump doors to open a small amount. However, this rotative movement is arrested by the other jaw 18 which moves toward the ratchet 16 and into the path of movement of the next succeeding stop member 17 on the opposite side of -the ratchet. To permit a further opening movement of the dump door. the pawl is moved in the opposite direction. This oscillatory movement of the pawl 19 is continued. permitting the dump doors to open with a step-by-step movement, until same have been opened the desired amount to permit the dumpable material to flow in accordance with requirements.

The dump doors may be closed by operation of the rod 12. said operation being accomplished through an operating `handle applied t0 the socket member 123. The detent 22 may be moved in a clockwise direction, after the shaft 12 has been turned sufficiently to close the dump doors of the car. Said detent will thereafter hold the mesmo shaft 12 against rotation regardless of any blows or vibration to which the pawl 19 may be subjected. The detent 22 will therefore operate as a safety device to prevent the accidental' turning of rod 12 and the consequent accidental opening of the dump doors.

One embodiment of the present invention has been described in detail. Many modifications will occur to those skilled in the art. It is intended in this patent to cover all such'modifications that fall within the scope of the invention as defined by the appended claims.

l claim:

1. Door operating mechanism comprising a shaft, socket means rigidly connected thereto for convenience in applying a turning force to said shaft, stop'means rigidly connected to said shaft, said stop means having stop members thereon in staggered relation, bracket means.` and means pivotally connected to said bracket means for consecutively engaging said stop members.

2. Door operating mechanism comprising a shaft. socket means rigidly connected thereto for convenience inapplying a turning force to said shaft. stop means rigidly connected to said shaft, said stop means having' stopmembers on either side thereof in staggered relation. bracket means and means pivotally connected to said bracket means for consecutively engaging said stop members, said bracket means being provided with a detent for engaging certain of said stop members.

3. Door operating mechanism comprising a shaft, socket means rigidly connected thereto for convenience in'applying a turning force to said shaft. stop means rigidly connected to said shaft. said stop means having stop members on either side thereof in staggered relation, bracket means, and means pivotally connected to said bracket means for consecutively engaging said stop members, said bracket means being provided with a detent for engaging certain of said stop members, said detent comprising a member pivotally connected to said bracket means and having two biased positions, one. of which is in locking engagement with said stop means and the other of which is out of locking engagement with said stop means.

1. Door operating mechanism comprising a shaft, stop means rigid therewith, said stop means being provided with stop members on both sides thereof, said stop members being in staggered relation, socket means on said shaft for convenience in 'turning said shaft. and a pawl having opposed jaws for alternately engaging the stop members on the two sides of said stop means.

5, Door operating mechanism comprising a shaft, stop means rigid `therewith, said stop means being provided with stop members on both sides thereof, said stop members being in staggered relation, socket means on said shaft for convenience in turning said shaft, and a pawl having opposed jaws for alternately enga ingl the stop memers on the two sides o said stop means, said bracket means bein provided with a detent having two biase positions, one of which is in stopping relation with certain of said stop members and the other of which is out of stopping engagement with said stop members.

6. Door operating mechanism comprising a bracket means, a shaft, stop means rigid with said shaft, said stop means having stop members arranged in staggered relation on the two sides thereof, means pivotally connected with said bracket means for consecutively engaging said stop members to permit intermittent motion of said stop means, stop members on one side of said stop means having bevelled portions, a detent mounted` on said bracket means, said detent having stop-,I ping relation with said stop members in one direction of rotation of said stop means and engaging said bevelled portions in the other direction of rotation of said stop means.

7. Door operating mechanism com rising a shaft, stop means rigidly mounte upon said shaft, said stop means comprising a disk-like member having stop members projectingfrom the two sides thereof, pivotally mounted means for consecutively abutting said stop members to permit intermittent motion 'of said shaft in one direction, the stop members on one side of said stop means having bevelled portions and a releasable detent having abutting relation with certain of said last mentioned stop members to limit movement of said shaft in one direction and engaging said bevelled portions in the other directionof rotation of said shaft.

8. A car having a bottom comprising a dump door dropping away from the car side to discharge the load, operating mechanism for said door comprising a shaft mounted parallel to the car side, andfmeans controlling the rotation of said shaft, said controllino' means comprising a lever oscillating in a ptlane parallel to the car side.

9. A car having a bottom comprising a dump door dropping away from the car side to discharge the load, means controlling the opening of said door, said controlling means comprising a lever oscillating in a path substantially parallel to the car side.

Signed at Chicago, Illinois, this 9th day o JOHN o. NEIKIRK. 

